Transporting and dumping equipment



' Feb. 20, 1945. G. R. DE MPSTER TRANSPOR'IING AND DiJMPING EQUIPMENTFiled April 26, 1943 4 Sheets-Sheet l I 1 IN V:EN TOR. GQOg'gR Del/2 5le r.

(la mew, MM rjdzm' Feb. 20, 1945. a. R. DEMPSTER 2,369,722

TRANSPORTING AND DUMPING EQUIPMENT Filed April 26, 1945 4 Sheets-Sheet 2IN AND DOWN I N V EN TOR. George R. Daupsi'ez B Y dfl'orneys Feb. 20,1945. G. R. DEMPSTER 2,369,722

TRANSPORTING AND DUMPING EQUIPMENT Filed April 26, 1943 4 Sheets-Sheet 3INVELNTOR. GeolgeR. Denqmlen BY I Feb. 20, 1945. v G. R. DEMPSTERTRANSPORTING AND DUMPING EQUIPMENT 4 Sheets-Sheet 4 Filed April 26, 1943Iig 7.

INVENTOR.

Patented F eb. 20, 1945 UNITED STATES PATENT OFFICE 2,369,722 I'mansron'rmo AND DUMPING EQUIPMENT George R. Dempster, Knoxville, Tenn.Application April 26, 1943, Serial No. 484,636

6 Claims. (Cl. 214-77) This invention relates to transporting anddumping equipment.

In many metallurgical procedures hot waste material has to be hauledaway from the'furnaces. It has heretofore been a usual procedure todischarge the waste material from the furnaces into suitable containerswhich are lifted by cranes onto a trailer or the like, which containersare then moved to a place where they may stand for cooling, and herethey are set on the ground to cool. After the waste -material hassufflciently cooled the containers are emptied by cranes into dumptrucks which carry the waste material to the dump. This necessity forcooling the waste material before it can be-put into the bodies of thedump truck requires the use of a relatively large quantity of equipmentin the form of containers, because the cooling period is frequently aslong as twenty four hours, and there must be suflicient containersalways in service and in various stages of cooling to handle all of thewaste from the furnaces.

It is an object of this invention to provide equipment whereby thecontainer which receives the discharge from the furnace may betransported from the furnace directly to the dump, it contentsdischarged andthe container then returned to the furnace for immediatereuse. Thereby the prolonged cooling period for the container iseliminated and the quantity of containers is decreased tov a number thatlittle exceeds the number required to receive the disan improvedcontainer of generally cylindrical construction which, while possessingparticular utility for the service heretofore outlined, constitutes animproved container possessing wide utility for other uses.

Another object of this invention is to provide equipment of the typecharacterized with an improved automatic hook which, while possessingparticular utility for the service hereinbefore the equipment, is alsopossessed of wide utility when used with other dumping and transportingequipment and other containers than hereinbefore referred to.

Another object of thi invention is to provide an improved transportingand dumping equipment, which, while possessing particular utility forhandling hot waste from furnaces, also possesses distinctive advantagesenabling its use for other purposes as will be apparent to those skilledin the art.

Other objects of this invention will appear as the description of theinvention proceeds.

The invention is capable of receiving a variety of mechanicalexpressions, one of which is shown somewhat diagrammatically on theaccompanying drawings, but it is to be expressly understood that thedrawings are for purposes of illustration only, and are not to beconstrued as definitions of t e limits of the invention, reference beinghad to the appended claims for that purpose. Referring in detail to theaccompaying drawings, wherein the same reference characters are used todesignate corresponding parts in the several figures,

Fig. 1 is an elevation of a truck provided with equipment embodyingthepresent invention and illustrating the improved container in dumpingposition;

Fig. 2 is a corresponding view but showing container in transportingposition;

the

Fig. 3 is an enlarged elevation, partly brokenposes of exempliflcationis shown as mounted on a truck ill of any suitable size andconstruction, and is preferably formed as a unit having a subframe thatmaybe attached in any suitable way to the chassis of the truck. Thesubfr-ame includes longitudinally extending angle bars H, which may takethe form of inwardly facing channel bars whose lower flanges constitutetracks or ways for a carriage carrying a skid frame, and suitabletransverse members to give adequate rigidity. Pivotally mounted at I! ona outlined, because reducing the overall height of as suitable support13 at each side of the subframe is a boom l4, and said booms areprovided with members it between which extends a transverse aseavasshaft l8. Pivotally connected to shaft I3 is the.

piston rod ll of a suitable hydraulic mechanism for moving the boom isaround their pivots l2;

thereby. As here shown it is provided with suitable reenforcing bands 3]one of which carries suitable lugs 38 for cooperation with overheadsuspending means such as may be used for resaid mechanism including apiston l8 working in a cylinder it that in turn is pivotally mounted ona transverseshait carried by suitable supmanually operated in anysuitableway; as b cable extending to the cab 28 of the truck.

rollers 28 at eachside thereoftorun on said tracks or, ways. Extendingupwardly fromsaid carriage Tlv is a skidjway is Many suitable confstruction; here shownas braced to provide ade-- I quate strength andrigidity by the: struts said skidway being shownns providing .a for-'wardly inclined track upand down which soon?- a tainer may be raisedand lowered in slidingcon a tact therewith as hereinafter explained.Aeso 'ciated with said carriage His-a second hydraulic mechanism thepiston rodof which is indicated at 3| projecting rigidly from atran'sverse-mem-.

Mounted for movement onthe .tracksor wars provided by the chann 5 M I vV p 7 1 indicated, at 21 and ha-V n! suitable h side of drop-bottom 4ais provided in. any suitj able way with legs so that the container may Ibe set on the ground. at the desired elevation.

Drop-bottom an suitably hinged to the plate u ber on the subframe andcooperating with a.

cylinder on the carriage 21 diagrammatically" suggested, said hydraulicmechanism having suitable piping in which is a control valve I3,

shown as also controllable from the cab. By opapexes'of saidframes.

' taining the container in registry with the .dis-

charge outlet'of the furnace, or suitable heat dissipatingflns may beused. Rigidly secured to its front in] any suitable wayas by braces 38is a flatsheet having suitable reeni'orcement at M- and providing asupport for a U-shaped bail 42 suitably :ilxed,v as. by weldlng totheinner face 01 said sheet 0.;

- Container .36 is providedwith a dump-bottom I in the-iorm of -agenerally square rigid plate 0 of any suitable size and materialprovided with suitable reenforcenient at 44 andcarrying a circular rib:45 designed to fit snuglyinto the lower cylindrical end of thecontainer36'. The underat 41,, and-projec in upwardly from opposite sidesthereof, oneither side of thecontainer 36 when theJdrop-botto'm isinclosed position (see 2.) are generallybuilt-up "frames l8 whoseape'xes are approximately at themidheight of the container when thedropbottom is closed, sons to give stability when the container'isllftedfby means cooperating with the .Each-of the booms M has a liftingchain as pivotally mounted thereon at and carrying eration of the lastnamed hydraulic mechanism the carriage with its skidway may be moved tothe rear extremity of the vehicle, as shown in Fig. l, or advanced to aforward position. as

shown in Fig. 2, as to be explained. The longitudinalsll arealsoprovided with rearwardly and upwardly sloping supporting members 3410fany suitable construction to provide 'rests f'o'r a container in aplaneat right angles to .the

inclined'face of the slfldw y. so that whenthej carriage 25 is movedforwardly *to' the position shown in Fig. 2 a container on the-skidwaymay" be lowered into contact with and supported by said members 34 asshown inFig; .2. The rear end of the subframe may also be provided with9. depending apron 3i toeprovide a surface against which a containerwill beer as it is raised from v the ground into cooperative engagementwith the 3 skidway. While the foregoing- Darts havebeen described asassociated into a unit byuse' of a subfra-me, it is to be understoodthat 1: preferred some or all of the foregoing. partsmay be suit-J ablyattached to the chassisof the truck.

The equipment as so far described is designed to lift a .suitablecontainer for hot waste material from its position at the furnace, moveit to the transporting position shown in Fig. 2, trans-Q at its free enda suitable hook or'link SI for cooperation with a pin- 52 at the apex ofa frame 48. The two booms are designed to'stladdle the container 36 whenthe container is in transporting-position as shown in Fig. 2 and whenthe container is setting on the ground thebooms may be lowered so't'hatthe hooks or links 51 on the.

chains 48 may be readily engaged with the pins 52 in order :tolift thecontainer along the skid- Q "way 29, whereupon the-carriage 21 may bemoved forwardly to the position shown in Fig. 2. For dumping, theskidway 29' ismoved rearwardly to the position in Fig. l, and

in this position the container is automati-- cally" heldinjits upperposition-on the skidway so that by lowering the booms ll the weight ofthe material in the container will swing the dropretention of thecontalnerlin its elevated posi- -tion shown in Fig. 1,. the skidway 29carries at its. upper end a transverse shaft 53 and pivotally mounted onsaidshaftmidwaydf its length and j 'in afposition'tocooperatewiththebailI2 is an its rear-face. an" upwardly extending projectionport thecontainer to the dump, move-the container to .the dumping position shownin Fig." 1 whereby its contents are discharged,'-then return the emptiedcontainer directly to the furnace.

While a rectangular or other suitable co'niicarries .in spaced relationa pair .of lugs 58 whose .outer curved peripheryconstitutes. a. cam aswill be explained. Extending transversely tainer may be used in thisinvention an improved container of generally cylindrical shape as shownat 36, and in greater detail in Figs..6, land 8,.

is preferred. Said container is made of any suitable mater-islandconstructed in any suitable automatic hook generally designated in Figs.

1and2.=

As shown more particularly inFigs. 3. 4 and 5,

said automatic hook includes a rearwardly and downwardly inclined bodymember 55 having at 58 so as to provide a curved dwell 51 forcooperation with the ball. The rear viacebfmember of the slot 59 betweensaid lugs 58 are a pair of pins 60 retained in said lugs in anysuitable. way.

Slidablymounted on said-pins 60 is a rectilinearly movable shuttle plate6| having a longitudinal slot- 81 therethrough; and through which extendth pins 60. Plate 6| as shownin Fig. 3, has a width such that itoverhangs the projection 58..

' terial to be discharged. The truck is backed up to the container 36with the skidway 29 at its rearmost position, asshown in Fig. 1, and by'operation of the hydraulic mechanism I8, I9, the booms I4 are lowered sothat the hooks 5| on the chains 49 may be engaged with the pins 52. Thehydraulic mechanism I8, I9, is then operated to swing the booms"upwardly, and as the chains are now attached to the frames 48projecting upwardly from the drop-bottom 43, the container with itswaste material is lifted upwardly by its hinged bottom, and by reason ofthe location of the pins 52 at the apexes of the frames 48 the containeris stable when so supported. As the booms I4 swing upwardly the.

container slides upwardly, along the apron 35 and onto the skidway 29,the plate 40 on the container providing a flat surface for cooperationwith the face of the skidway. By suitable manipulation of the hydraulicmechanism whose valve is indicated at 33 the carriage 21 may moveforwardly on the truck body to the position shown in Fig. 2 preferablyunder the pressure of the filled container leaning against the skidwayand when the carriage reaches the position shown in Fig. 2 the containermay be lowered onto the supporting surfaces 34. In this position thebooms I4 embrace the container 36 so as to prevent any sidewisedisplacement of the container. Also, in this position, the legs 46 onthe container extend downwardly on either side of the truck body betweenthe side frames and the wheels. With the container in this position, thetruck may be driven to the dump.

When the dump is reached, the carriage 21 is moved to its rearwardposition and the hydraulic mechanism l8, I9 is operated to lift thecontainer 36 into engagement with the automatic hook.

' As the booms I4 are moved upwardly to lift the container 36, thebail-42 carried by the latter engages the rearwardly and upwardlyinclined edge 61 of the body member 55 of the hook and earns the hookfrom the position shown in full lines in Fig. 3 toward the .positionshown in dotted lines, this movement being against the action of gravityas controlled by the counterweight 65. When the bail reaches the upperextremity of the inclined surface 61 it engages the lower overhangingedge 63 of the reciprocating shuttle plate BI and slides the latterupwardly on the pins 60 until the bail has reached an elevation abovethe projection 56. Thereupon counterweight 65 swings the automatic hookabout its pivot 53 causing the projection 56 to enter the ball so thatthe dwell 51 is beneath the bail.

When the booms I4 are then lowered the ball 42 is engaged with the dwell51 which stops the downward movement of the body of the container 36,the reciprocating shuttle plate 6| following the bail in its downwardmovement and locking the bail in thehook against displacement. Continueddownward movement of the booms I4 causes the drop-bottom plate 43 tohinge at 41 under the weight of the material in the container 36 untilthe dump-bottom has swung to the position shown in Fig. 1, dischargingthe contents of the container. The dump-bottom is then swung upwardly toclosing position by upward movement of the booms I4, and when .the

dump-bottom closes the container 36 the latter is picked up, lifting thebail 42 therewith. Bail 42 slides the-shuttle plate 6| upwardly on itspins 60 until the bail reaches the intermediate positiondiagrammatically indicated in dotted lines in Fig. 3, at which time itis in contact with the Y curved cam edge 68 of the lugs 53. Continuedupward movement of the ball 42 cams the hook to the left as viewed inFig. 3 until the bail moves out of vertical alignment with the loweredge of the shuttle plate 6|, whereupon the latter falls by gravity andcloses th entrance to the hook so that upon downward movement of theball the latter cannot reengage the hook. Thus the bail isautomaticallydisengaged from the hook and the container can be readilylowered'to the ground or returned to the supporting members 34.

The container after dumping can again be moved forwardly on the truck totransporting position, as shown in Fig. 2, for return to the furnace,and at the latter location the hydraulic mechanism controlled by thevalve 33 is again operated to move the skidway 29 to its rearmostposition, displacing the container 36 to a position wherein by loweringthe booms I4 the container may be set upon the ground at or adjacent tothe furnace and either in position to receive waste material dischargedby a chute therefrom or in position for the engagement of supportingmeans with the lugs 38.

It is to be understood that the container may be provided with anysuitable provisions as asbestos packing or other means, to prevent theescape of noxious fumes from the container.

It will therefore be perceived that by the present invention improveddumping equipment has been provided whereby the container for receivingwaste material does not have to be cooled off and then dumped into adump truck, but the container may be taken immediately from the furnaceto the dump pile and thereby much saving in equipment effected. While animproved container for the foregoing service has been provided, it willnow be apparent to those skilled in the art that the container is ofwider utility than this particular service. Similarly, while an improvedautomatic dump hook has been provided having the advantage of lowoverall height for the service heretofore described, it will beappreciated by those skilled in the art that the automatic hook is alsopossessed of much wider utility. Owing to the construction of the boomsthey not only straddle the container as shown, but they may be loweredinto alignment with the subframe on the truck chassis if desired. Theautomatic hook adds substantially no height to the overall height of theequipment and hence the equipment as hereinbefore described possesses a,marked advantage in that it can be used around plants where clearancesare low.

While the embodiment of the invention illustrated on the drawings hasbeen described with considerable particularity, it is to be expresslyunderstood that the invention is not restricted thereto as otherembodiments of the invention will now be readily suggested to thoseskilled in the art by the foregoing disclosure, while changes may bemade in the details of construction, arrangement and proportion ofparts, and particularly any suitable framework. subframe, skidway andcarriage, hydraulic mechanism, controls therefor, etc., may be usedwithout departing from the spirit of this invention. Whilc as beforepointed out the improved container and the a'flat surface forcooperation with a skidway, a

illustrated as employing the improved cylindrical container of thisinvention, it will now be apparent that the automatic hook as disclosedwill operate in the same way if other forms of conform havingdrop-bottoms. Reference istherefore to be had to the appended claims fora 1 definition of the limits of the invention.

What is claimed is:

1. In a transporting and dumping equipment, in combination with a frameproviding a track, a carriage carrying a skidway movable on said track,booms pivotally mounted at the sides of said frame for raising andloweringa container, supporting means carried by the ends of said boomsfor attaching a container thereto and hy-f draulic mechanism forcontrolling the movement of said carriage and said booms, a cylindricalcontainer, 9. flat plate rigidly secured to the cylindrical wall of saidcontainer for cooperation with the skidway, a bottom for said containerhinged to said flat plate and including a rectangular plate saidrectangular plate projecting laterally from said container, and upwardlyextending triangular-shaped members carried by the opposite sides ofsaid rectangular plate exteriorlypf said container and provided at theirapexes with means for the attachment thereto of said supporting means onsaid booms, said last named members having their bases substantiallycoextensive with the opposit sides of said rectangular plate. a

2. A cylindrical container for use with transporting and dumpingequipment including a cylindrical lateral wall, a flat plate rigidlysecured to said cylindrical wall and adapted to provide a flat surfacefor cooperation with a skidway, a bottom for said cylindrical containerhinged to said flat plate, said bottom comprising a platelike memberwhich is larger than the cross section of said container, said bottommember carrying a circular rib for cooperation with the peripheral wallof said container when the bottom is closed, and means projectingupwardly from opposite sides of said bottom member at the exbottom forsaid cylindrical container hinged to said flat plate, said bottomincluding a generally rectangular bottom member whose opposite sidesproject beyond the cylindrical wall of said container, and generallytriangularly shaped members carried by the opposite sides of saidrectangular bottom member and having at the apexes thereof means for theattachment of lifting means thereto.

4. In a transporting and dumping equipment, in combination with a frameproviding a track, a carriage carrying askidway movable on said track,booms pivotally mounted at the sides of said frame for raising andlowering a container, supporting means carried by the ends of said boomsfor 'attachinga container thereto and hydraulic mechanism forcontrolling the movement a rectangular plate projecting laterally fromsaid A container, and upwardly extending triangularlyshaped memberscarried by the opposite side ofsaid bottom exteriorly of said containerand provided at their apexes with means for the attachterior of saidcontainer for the attachment of lindrical lateral wall, a flat platerigidly securedto said cylindrical wall and adapted to provide mentthereto of said supporting means on said booms.

5. A cylindrical container for use with transporting and dumpingequipment including a cylindrical lateral wall, a flat plate rigidlysecured to said cylindrical wall and adapted to provide a flat surfacefor cooperation with .a skidway, a bottom for said cylindrical containerhinged to said plate, said bottom comprising a plate-like member whichis larger than the cross section of said container, and means carried bysaid bottom at the opposite sides thereof exteriorly of said cylindricalwall and projecting upwardly exteriorly of said container at oppositesides thereof to points approximately midway of the height of the forthe attachment of lifting means the cylindrical wall thereof and arectangular bottom hinged to said plate and projecting laterally fromthe cylindrical wall of said: container, and means on said bottom forcarrying. said container from said bottom, said means being disposedexteriorly of the cylindrical wall of said container at opposite sidesthereof and when said bottom is closed projecting upwardly outside ofsaid container approximately to the midheight of said container for theattachment thereto of said supporting means on said booms.

Y GEORGE R. DEMPSTER.

